How much time should I leave between finishing classes and taking the exam?
You should not leave a long period between the end of your classes and taking the GMAT. The longer you leave, the more likely you are to forget what you have learned, and for your skills to become “rusty”. On the other hand, it is not a good idea to take the exam the day after your last class, because you will need a bit of time to consolidate everything you have learned during your course. We recommend a gap of up to 4 weeks between finishing classes and taking the test.